Slats BOYESEN fiber for valves QUAD YAMAHA BLASTER 200

Here are BOYESEN valves slats for QUAD YAMAHA BLASTER competition 200. These valves let you gain a great power both in high rpm torque baths. The system BOYESEN filed patent uses two blades on each side! A closer for the pair (resonant frequency is low speed) and a very rigid high revs (frequency on high speed). These valves are supplied with an ultra full record (carburetor adjustment etc etc,) Stops deleted special strips and stickers.